Tembo & Trading 212 - overlap in FSCS?

Oasis1

I currently have more than 85k between them and am considering transferring a further 20k into my Trading 212 ISA or a new Tembo Cash ISA. But I'm worried about going over for FSCS protection. Maybe it's the heat but the maths is evading me on this one...

Tembo LISA 38k = Barclays, Bank of Scotland, Aldermore Bank and Shawbrook Bank. Percentages unknown but they state: "The proportion of your Tembo savings held with each of our partner banks can vary over time. We frequently move funds between our partner banks, and the banks we use may change over time, too. We do this to ensure we can always access the best savings rates, which we can pass on to our customers. But as a rough guide, we hold between 10-40% of your funds with each bank, and we will not hold more than 40% with any single bank."

Trading 212 Cash ISA 52k = Natwest (~45%), Barclays (~40%), Lloyds (~9%), JP Morgan (~5%) & BNY (~2%).

I think this means up to 80% could be with Barclays bank. Would it be sensible to do so or not? Anything else I'm missing? 

BreakingGlass

40% of £38k plus 40% of £52k is still only 40% of the total of £90k, so not more than £36k with Barclays.